1961/1/1: 010161 = 010:161 = each is palindrome 1961/1/2: 020161 = 020:161 = each is palindrome 1961/1/3: 030161 = 030:161 = each is palindrome 1961/1/4: 040161 = 040:161 = each is palindrome 1961/1/5: 050161 = 050:161 = each is palindrome 1961/1/6: 060161 = 060:161 = each is palindrome 1961/1/6: 1661 = palindrome 1961/1/6: 61016 = palindrome 1961/1/6: 6116 = palindrome 1961/1/6: 6161 = cyclic permutation symmetric 1961/1/7: 070161 = 070:161 = each is palindrome 1961/1/8: 080161 = 080:161 = each is palindrome 1961/1/9: 090161 = 090:161 = each is palindrome 1961/1/9: 1961 = 180 deg rotationally symmetric 1961/1/9: 61019 = 180 deg rotationally symmetric 1961/1/9: 6119 = 180 deg rotationally symmetric 1961/1/10: 01101961 = 0110:1961 = each is 180 deg rotationally symmetric 1961/1/10: 10011961 = 1001:1961 = each is 180 deg rotationally symmetric 1961/1/10: 19610110 = 1961:0110 = each is 180 deg rotationally symmetric 1961/1/15: 011561 = 011:561 = integer ratio of 1 to 51 1961/1/16: 16161 = palindrome 1961/1/16: 61116 = palindrome 1961/1/19: 19161 = 180 deg rotationally symmetric 1961/1/19: 61119 = 180 deg rotationally symmetric 1961/1/22: 610122 = 610:122 = integer ratio of 5 to 1 1961/1/31: 013161 = 01:31:61 = arthimetic series of increment 30 1961/2/1: 020161 = 020:161 = each is palindrome 1961/2/16: 16261 = palindrome 1961/2/16: 61216 = palindrome 1961/2/18: 021861 = 021:861 = integer ratio of 1 to 41 1961/3/1: 030161 = 030:161 = each is palindrome 1961/3/5: 610305 = 610:305 = integer ratio of 2 to 1 1961/3/16: 16361 = palindrome 1961/3/16: 61316 = palindrome 1961/3/19: 031961 = 031:961 = integer ratio of 1 to 31 1961/4/1: 040161 = 040:161 = each is palindrome 1961/4/16: 16461 = palindrome 1961/4/16: 61416 = palindrome 1961/4/18: 041861 = 041:861 = integer ratio of 1 to 21 1961/5/1: 050161 = 050:161 = each is palindrome 1961/5/15: 051561 = 051:561 = integer ratio of 1 to 11 1961/5/16: 16561 = palindrome 1961/5/16: 61516 = palindrome 1961/6/1: 060161 = 060:161 = each is palindrome 1961/6/1: 1661 = palindrome 1961/6/1: 6161 = cyclic permutation symmetric 1961/6/9: 961961 = cyclic permutation symmetric 1961/6/10: 061061 = cyclic permutation symmetric 1961/6/10: 610610 = cyclic permutation symmetric 1961/6/16: 16661 = palindrome 1961/6/16: 61616 = palindrome 1961/6/19: 1961961 = 180 deg rotationally symmetric 1961/7/1: 070161 = 070:161 = each is palindrome 1961/7/16: 16761 = palindrome 1961/7/16: 61716 = palindrome 1961/8/1: 080161 = 080:161 = each is palindrome 1961/8/16: 16861 = palindrome 1961/8/16: 61816 = palindrome 1961/9/1: 090161 = 090:161 = each is palindrome 1961/9/1: 1961 = 180 deg rotationally symmetric 1961/9/6: 196196 = cyclic permutation symmetric 1961/9/6: 961961 = cyclic permutation symmetric 1961/9/16: 1691961 = palindrome 1961/9/16: 16961 = palindrome 1961/9/16: 61916 = palindrome 1961/10/1: 01101961 = 0110:1961 = each is 180 deg rotationally symmetric 1961/10/1: 10011961 = 1001:1961 = each is 180 deg rotationally symmetric 1961/10/1: 19611001 = 1961:1001 = each is 180 deg rotationally symmetric 1961/10/1: 611001 = 611:001 = integer ratio of 611 to 1 1961/10/6: 061061 = cyclic permutation symmetric 1961/10/11: 101161 = 101:161 = each is palindrome 1961/10/13: 611013 = 611:013 = integer ratio of 47 to 1 1961/11/6: 61116 = palindrome 1961/11/9: 61119 = 180 deg rotationally symmetric 1961/11/10: 101161 = 101:161 = each is palindrome 1961/11/11: 11111961 = 1111:1961 = each is 180 deg rotationally symmetric 1961/11/11: 111161 = 111:161 = each is palindrome 1961/11/11: 19611111 = 1961:1111 = each is 180 deg rotationally symmetric 1961/11/12: 121161 = 121:161 = each is palindrome 1961/11/13: 131161 = 131:161 = each is palindrome 1961/11/14: 141161 = 141:161 = each is palindrome 1961/11/15: 151161 = 151:161 = each is palindrome 1961/11/16: 161161 = palindrome 1961/11/16: 161161 = cyclic permutation symmetric 1961/11/16: 161161 = 161:161 = each is palindrome 1961/11/16: 611116 = palindrome 1961/11/17: 171161 = 171:161 = each is palindrome 1961/11/18: 181161 = 181:161 = each is palindrome 1961/11/19: 191161 = 180 deg rotationally symmetric 1961/11/19: 191161 = 191:161 = each is palindrome 1961/11/19: 611119 = 180 deg rotationally symmetric 1961/12/11: 121161 = 121:161 = each is palindrome 1961/12/20: 122061 = 122:061 = integer ratio of 2 to 1 1961/12/26: 261261 = cyclic permutation symmetric